<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>

    <script>
        'use strict';

        let name = '秦琴';
        let age = 3;

        let msg = `你好，${name} !`;
        console.log(msg)


    </script>

</head>
<body>

</body>
</html>